It has been proposed to adopt loading conditions as recommended in the Table 1, for design of UASB reactor depending on the average COD concentration of the raw wastewater. These loading rates recommended are suitable for temperature about 30 degrees C. For higher temperature, the loading rates can be slightly increased and for low temperature these design loading rates can be reduced.
Table 1. Recommended loading range for design of UASB reactor based on COD concentration at average flow
Reactor Volume
Based on the higher suitable value of OLR, for given COD concentration, the volume of reactor required is to be worked out as: